JP3366530B2 - Seedling planting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting device such as a rice transplanter or a strawberry planter, and more specifically, a belt type vertical feeder for sending seedlings placed on a seedling stand to a seedling takeout port below. The present invention relates to a seedling planting device that includes a feeding device and that is configured by winding the belt around the belt type longitudinal feeding device around a lower drive pulley and an upper idle pulley.

[0002]

2. Description of the Related Art Conventionally, in this kind of seedling planting device,
Only the lower half of the seedling stand was equipped with a belt-type vertical feeder. For this reason, a tension spring is wound around the belt in order to provide tension applying means such as a spring for tensioning the belt with a predetermined tension so as to prevent slippage and the like during conveyance by the belt type vertical feeding device. It is known that the upper wheel is provided so that it can be pulled upward.

[0003]

By the way, in recent years, it has been proposed that a belt of a belt type longitudinal feeding device is stretched over almost the entire area of the seedling placing portion of the seedling placing table. In the conventional method, when a tension spring is used to apply tension to the belt, a member for locking one end of the tension spring is provided from the vertical feeding start end of the seedling stand. It is necessary to install the seedlings in a state that they are separated from each other, and the seedling stand as a whole is increased in size, and the protruding members are likely to be an obstacle, which makes it difficult to supply seedlings.

The present invention has been made in view of the above circumstances, and it is possible to obtain a seedling planting structure which can be relatively compactly constructed and which can maintain a good belt tension in a state where it is easy to supply seedlings. The purpose is to provide an attached device.

[0005]

[Means for Solving the Problems]

(Structure) The seedling planting apparatus according to claim 1 of the present invention is reciprocally moved left and right.
A belt-type vertical feeding device for feeding a seedling placed on a moving seedling placing table to a lower seedling take-out port is provided, and the belt-type vertical feeding device includes a lower drive pulley and an upper idle pulley. A seedling planting device configured by winding a conveyor belt over the belt , wherein the belt is provided near the upper end of the seedling stand.
The transporting start end of the vertical feeding device is positioned to support the idle pulley so as to be movable in the distance with respect to the drive pulley, and also in the seedling feeding direction of the transport belt in a side view.
On the back side of the main body of the seedling stand within the stretched area.
The bracket is installed so that it projects more than the
The pedestal is supported by a fixed column arranged on the back side of the seedling stand.
This is a characteristic configuration.

(Operation) According to the constitution of claim 1 of the present invention, the belt type longitudinal feeding
The transportable range of the seedling device is from the vicinity of the top of the seedling stand.
The seedlings extend from near the seedling take-out port at the bottom of the stand.
Longitudinal feed to the placed seedlings over almost the entire range of the nose
Can be acted on, simply slide the seedlings vertically
Being able to perform vertical feed reliably compared to what is fed
Can be planted with the seedlings securely delivered to the seedling take-out port.
Wear.

(Effect) Therefore, according to the configuration of claim 1 of the present invention, seedling feeding
Due to the high degree of certainty,
Possibly very small and poorly planted
Be done.

(Structure) A seedling planting device according to a second aspect of the present invention is the device according to the first aspect , wherein the idle pulley is separated from the drive pulley.
By applying a biasing force to the direction of separation,
The tension applying means for applying a force is provided by the above-mentioned conveying bell in side view.
It is characterized in that it is provided in a state in which it is located within the winding area of the toe .

(Operation) According to the structure of claim 2 of the present invention, the tension applying means
Is located inside the belt winding area in side view.
Since it is installed in the
It is not necessary to provide a structure for applying tension beyond the circumference.

(Effect) Therefore, according to the configuration of claim 2 of the present invention, the tension
A member that locks, for example, a spring to provide additional means
Is not installed beyond the belt installation range?
For tensioning springs, etc. on the vertical conveyor and seedling stand
Being able to prevent protrusions from forming on the supporting points of
And the seedling stand can be made compact as a whole
In both cases, the seedlings can be replenished without any obstacles
It is possible to improve the property.

(Structure) The seedling planting device according to claim 3 of the present invention is the device according to claim 1 or 2, wherein a plurality of the belt-type vertical feed devices are arranged side by side on the left and right sides of the seedling stand. It is characterized in that it is equipped with a pair of left and right belt-type vertical feeding devices as a set, and the tension is applied by the tension applying means.

(Operation) According to the third aspect of the present invention, the number of tension applying means can be reduced as compared with the case where the tension applying means is provided for each belt type vertical feeding device. There is.

(Effect) Therefore, according to the configuration of claim 3 of the present invention, the number of tension applying means for applying tension to the belt can be reduced, so that the number of parts can be reduced and
The cost can also be reduced.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a seedling planting device in a straw plant transplanter. The seedling planting device 1 is mounted on the rear end portion of the riding traveling machine body on the left side outside the drawing via a four-link mechanism 2 so as to be driven up and down. And
This seedling planting device 1 is configured for 6-row planting, and the straw-plant seedlings F divided into stocks are placed and intermittently laterally fed at predetermined pitches, and left and right with a constant stroke. A seedling stand 3 in a backward-downward tilted posture that is reciprocally moved laterally, a seedling planting device 5 as a planting mechanism for taking out and planting one seedling of seedling from a seedling take-out port 4 at the lower end of the seedling stand 3. It is provided with a transmission case D through which power for driving the seedling planting equipment 5 and the like is transmitted from the passenger traveling vehicle body, a grounding float 6 and the like for leveling the planting surface in the field.

As shown in FIG. 3, the seedling placing table 3 is configured for 6-row planting, which is provided with 6 rows of the respective seedling placement portions a corresponding to the planting rows. A partition wall 7 for partitioning the seedling placing portions a inside the seedling placing base 3 is provided between the left and right ends of the seedling placing base 3.
In addition, each seedling placement section a is provided with a belt-type vertical feeding device 8 that sends the strawberries seedlings F to the seedling take-out port 4 side by a certain distance each time the seedling placing table 3 reaches the stroke end of the lateral movement. There is. In the figure, 70 is a sensor for detecting the seedling amount.

To form the seedling planting tool 5, a planting claw 9 for picking up and planting one seedling and a seedling pushing device 10 for pushing out the seedling held by the planting claw 9 at the time of planting are provided on the planting arm 11. It is configured to plant the seedlings by drivingly rotating the planting claw 9 while passing through the seedling take-out port 4. Then, when the seedling is taken out, an auxiliary claw 12 is provided prior to the planting claw 9 to rush near the upper part of the picked portion of the strawberries seedlings F on the seedling stand 3 to ensure the separation of the seedlings.

As shown in FIGS. 1 to 3, each of the belt type vertical feeding devices 8 is provided with a drive pulley 13 located at a low position near the seedling take-out port 4 and a position substantially near the upper end of the seedling stand 3. A belt 15 for transportation is wound around the idler pulley 14 located in a stretched state. That is, the seedling placing table 3 itself is configured as a frame body in which frame members are vertically and horizontally connected, and each partition wall 7 is fixed to the vertical frame member 3A along the vertical direction, and the left and right vertical frames adjacent to each other are fixed. The drive pulley 13 and the idling pulley 14 are provided on the members 3A, 3A in a supported state, and the belt 15 is wound around the drive pulley 13 and the idling pulley 14.

Further, a support structure is provided for supporting the seedling stand 3 on the machine body side, which is opposite to the mounting of the seedling stand on the seedling stand 3. That is, seedling stand 3
In each of the vertical frame members 3A, the metal fittings 16 made of sheet metal are provided by bolting at the upper portion of the vertical frame material 3A opposite to the seedlings, and each of the metal fittings 16 is made of an aluminum drawing material along the left-right direction. The rail fittings 17 are connected with bolts. The mounting bracket 16 and the rail bracket 17 are
A bracket 18 is formed to straddle the conveyor belt 15 and connect to the frame structure as the main body of the seedling stand 3. Further, the guide groove 19 of the rail fitting 17 in which the guide groove 19 is formed along the left-right direction which is recessed upward.
A support member 21 made of a square pipe material having an engaged portion 20 that engages with is connected to the planting transmission case D by means of bolts 22 which are provided opposite to each other on the left and right sides. Although not described in detail, the lower part of the seedling stand 3 is also supported by the planting transmission case D by a rail structure so as to be slidable left and right.

Further, as shown in FIGS. 2 and 7, a horizontal frame member 3B connecting the upper end portions of the seedling stand 3 to the left and right,
A pedestal portion 24 made of a plate material on which a seedling group supply box 23 for supplying a seedling group to the seedling placing portion a of the seedling placing table 3 can be placed while keeping a load is provided by bolt fastening. The pedestal portion 24 is located above the upper end of the conveyor belt 15 and has an upper surface that is substantially along the conveyor surface of the conveyor belt 15. Therefore, when the seedling group is supplied to the seedling placement section a, as shown in FIG. 7, the load of the seedling group supply box 23 is placed in the state of being stored in the pedestal portion 24 and the seedling group supply box 23 is placed. After the seedling group supply box 23 is slid and loaded, the front wall 23f of the seedling group supply box 23 is swingingly lowered to be opened, and in this state, the seedling group supply box 23 is pulled out rearward so that only the seedling group is placed in the seedling placing section a. It is something to replenish above.

With the above structure, the support member 21 for supporting the seedling stand 3 on the planting transmission case D as a fixing portion.
Since the upper end of the upper part of the conveyor belt 15 of the vertical feed belt transfer device 8 is set higher than the upper part of the upper part, the seedling placing part a in the seedling placing table 3 is set in the seedling placing table 3.
The seedling group can be vertically fed by the conveyor belt 15 over almost the entire range. Therefore, there is no need for a member for pushing the seedling group downward to assist the vertical feeding, which is structurally simple.

Next, the tension applying means 25 for applying tension to the belt 15 in the belt type vertical feeding device 8 will be described. As shown in FIG. 1 to FIG. 6, among the six belt type vertical feed devices 8 arranged side by side on the left and right sides, a pair of left and right three is respectively configured as a set so that tension can be applied. More specifically, a pair of left and right belt type vertical feed devices 8, 8
As a set, and the idler pulleys 14 and 14 corresponding to the set are externally fitted onto a single shaft body 26 so as to be integrally rotatable or freely rotatable, and both left and right end portions of the shaft body 26 and both A portion between the idler pulleys 14 and 14 is supported by a shaft support fitting 27 as shown in FIG. 6 so as to be rotatable around the horizontal axis P.
Here, a pair of left and right belt type vertical feed devices 8 and 8 are arranged side by side in three sets. And
The shaft 26 has both left and right ends thereof and both idle pulleys 1.
At a portion between Nos. 4 and 14, it is inserted into a guide notch groove 29 formed in a shaft guide metal fitting 28 fastened to each vertical frame member 3A along the vertical feed direction. The guide notch groove 29 allows the shaft body 26 to be slidably guided in the vertical feed direction and to be regulated in the direction orthogonal to the vertical feed direction. A pair of left and right vertical bar members 27B and 27B are provided on the horizontal bar member 27A constituting the shaft support fitting 27.
Is provided in a state where the drive pulley 13 extends to the crocodile, and a lateral pin 31 that locks one end of a spring 30 that applies tension to the belt 15 is continuously provided at the tip of each vertical bar member 27B, 27B. ing. This pin 31 is a vertical frame member 3
It is inserted into the guide notch groove 33 of the second shaft guide fitting 32 that is bolted to A. Notch groove 3 for this guide
3, the pin 31 is slidably guided in the vertical feed direction and its position is regulated in the direction orthogonal to the vertical feed direction. The same parts as 32 are used as shown in FIG. Further, in a state of being located between the shaft guide metal fitting 28 and the second shaft guide metal fitting 32, the second horizontally oriented pin 34 for locking the other end of the spring 30 is attached to the mounting metal fitting 16
It is connected by welding or the like. The spring 30 is composed of an extension spring, and is provided in a state of being located within the winding region of the belt 15 in a side view. That is, the spring 30 is positioned in a side view within a range surrounded by a transport action path for the seedlings of the belt 15 forming the endless rotation zone and a return route that returns to the transport action path on the back side of the transport action path. -ing
Further, in the shaft support metal fitting 27, the vertical bar member 27B is abutted against the second guide metal fitting 32 in the left-right direction even if the shaft support metal fitting 27 is improperly displaced to the left or right. , 32 is maintained in a fixed posture. Here, the second guide fitting 32 constitutes a lateral displacement restricting means, and the shaft support fitting 27 constitutes a belt tension member.

Next, the idle pulley 14 will be briefly described. As shown in FIG. 4, the idler pulley 14 of the belt-type vertical feeder 8 in the seedling placing portion a for one row has a single pulley member fitted onto the shaft body 26 so as to be freely rotatable. Instead, the pair of left and right pulley members 35, 35 having the same shape are fitted around the shaft body 26 in a freely contacting manner in a state of being in close contact with each other. As described above, the pair of left and right pulley members 35, 35 constitutes the idle pulley 14. When the idle pulley 14 made of a synthetic resin material is made of a single pulley member, the lateral width of the conveyor belt 15 is Is relatively large, so that the pulley material becomes a relatively long and complicated shape, the die for forming the pulley material becomes expensive, and the molding difficulty is high. In addition, as shown in FIG. 8, by forming a small diameter only near the abutting portion of the pair of left and right pulley members 35, 35, in accordance with the small diameter portion S, the belt is formed at the center of the left and right width on the inner surface side of the conveyor belt 15. It can also be configured to be capable of engaging and guiding the ridge 36 formed along the rotational direction, that is, the longitudinal feed direction. The drive pulley is also composed of a pair of left and right pulleys.

Next, the partition wall 7 will be briefly described. As shown in FIG. 1, the partition wall 7 is formed by processing a stainless steel plate material into a box-shaped sheet metal, and its upper end is closed by a synthetic resin cap 37 to improve the appearance. In addition, the generation of rust and the like on the partition wall 7 is suppressed.

Next, the cotter pin structure of the seedling planting tool 5 will be briefly described. As shown in FIG. 9, the auxiliary claw 12
A swinging arm 38 for swinging the shaft is extended rearward from each thread transmission case 39 (the above-mentioned transmission case D) and is rotatable about a horizontal axis Q in a case in which a chain transmission mechanism is installed. It is pivotal. The swing arm 38 is externally fitted to a rotary support shaft 40 which is axially supported by each of the transmission cases 39, and the rotary support shaft 40 and the swing arm 38 are fixed with a key 41 at a predetermined phase. is doing. Furthermore, the cotter pin 42 prevents rattling between the swing arm 38 and the rotation support shaft 40, which is insufficient with the key 41. That is, a pin hole 43 having a tapered taper is formed in the swing arm 38 in a state of partially intersecting with the rotation support shaft 40, and a cotter pin 42 having a tapered taper is fitted into the pin hole 43. . The cotter pin 42 is fitted and inserted through a screw hole of a nut 44 which is welded in advance to an inlet portion of the pin hole 43, and the cotter pin 42 is pushed into the pin hole 43 by a screwing operation of a bolt 45 fastened to the nut 44. There is. Since the cotter pin 42 can be pushed into the pin hole 43 by the screwing operation of the bolt 45, it is possible to work in a narrower space than when the cotter pin 42 is directly hit with a hammer or the like and fitted into the pin hole 43, which makes the work easier. ing.

Next, a mechanism for switching each belt type vertical feeding device 8 between a drivable state and a drivable state will be described. As shown in FIGS. 4 and 5, the shaft support fitting 27
And a switching lever 55, which is supported on the rear surface of the seedling stand 3 so as to be swingable around an axis X orthogonal to the belt transport surface, by operating the switching lever 55, the idle pulley 14 drives the drive pulley. 13, a state in which the tension of the belt 15 is relaxed by displacing the belt 15 close to the belt 13 so that the rotational force of the drive pulley 13 is not transmitted to the belt 15, and the belt 15 is rotated so as to apply a tension force to the belt 15 by the urging force of the spring 30. The pulley 14 can be switched to a state in which the pulley 14 is positioned away from the drive pulley 13. More specifically, the switching lever 55 is the first from the left in the rear view when the three vertical frame members 3A are arranged side by side in which a pair of left and right belt type vertical feed devices 8 and 8 are arranged. A support pin 57 is provided along the axis X on a mounting bracket 56 that is erected and connected over the second one, and the support pin 57 is inserted into and engaged with a long hole 58 of a sheet-machined switching lever 55. A hole 59 provided near the elongated hole 58 is loosely fitted with a third pin 27C protruding from a central portion in the left-right direction of the horizontal rod member 27A of the shaft support fitting. A lever guide 60 made of a metal plate for guiding the switching lever 55 is connected to the erection metal fitting 56, and the lever guide 60 changes the position of the switching lever 55 between the belt loosening position and the belt tension position. Guide and switching lever 55 in both positions
To be able to hold. Furthermore, the switching lever 55
At the intermediate position of the belt-type longitudinal feed device 8, a bridging clutch for the set of longitudinal belt feeders 8 (the planting mechanism 5 corresponding to each planting article interposed in the transmission mechanism in the transmission case D). A wire stopper pin 62 for mounting a release wire 61 which is linked to operate for turning on and off). In the figure, 63
Is a slack prevention member made of sheet metal for receiving the relaxed belts 15 and restricting the slack so that the back surface of each belt 15 does not hang downward when the belts 15 are relaxed. The slack preventing member is not limited to the one made of sheet metal, but may be formed by welding a rod member or assembling it.

With the above structure, when the switching lever 55 is positioned at the lower holding position of the lever guide 60, the upper support is elastically urged by the urging force of the spring 30, so that the upper support is elastically urged. This allows the belt 15
Is in a normal state in which the rotational force of the drive pulley 13 is transmitted to the belt 15. At this time, the planted clutch is also operated in the engaged state. On the other hand, when the switching lever 55 is positioned at the upper holding position of the lever guide 60, the spring 3
Since the shaft support fitting 27 is displaced to the lower side against the biasing force of 0, and the idler pulley 14 is located closer to the drive pulley 13, the tension of the belt 15 is relaxed. Therefore, the rotational force of the drive pulley 13 is not transmitted to the belt 15 due to slip or the like.
Therefore, for example, it is possible to switch between planting two rows so that four rows can be planted, stopping planting four rows so that two rows can be planted, or allowing six rows to be planted.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a seedling planting device of a straw plant transplanter.

[Figure 2] Vertical side view showing the seedling stand

[Figure 3] Rear view showing the seedling stand

FIG. 4 is a partially cutaway front view showing the seedling feeding belt and the like on the upper part of the seedling stand.

FIG. 5 is a vertical sectional front view showing a belt for feeding seedlings on the upper part of the seedling stand.

FIG. 6 is a partially cutaway front view showing a shaft support fitting.

FIG. 7 is a perspective view showing the seedling group supply box and the upper part of the seedling stand.

FIG. 8 is a partially cutaway front view showing another seedling feeding belt and the like.

FIG. 9 is a partially cutaway side view showing the structure of an auxiliary pawl driving arm.

[Explanation of symbols]

3 seedling stand 4 Seedling outlet 8 Belt type vertical feed device 13 Drive pulley 14 Idler pulley 15 belts 25 Tension adding means

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-1-257404 (JP, A) JP-A-8-70633 (JP, A) Actually open 5-5-2225 (JP, U) Actually open 60- 95818 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01C 11/02

Claims (3)

(57) [Claims] 1. A belt type vertical feeding device (8) for feeding a seedling placed on a seedling stand (3) which reciprocates left and right to a lower seedling take-out port (4), and the belt type vertical feeder A seedling planting device comprising a feeding device (8) wound around a conveyor belt (15) between a lower drive pulley (13) and an upper idle pulley (14), wherein The conveyance start end of the belt type vertical feeding device (8) is positioned near the upper end of the placing table (3) to support the idler pulley (14) so that it can move in the distance from the drive pulley (13). At the same time, the bracket (18) on the back surface of the main body of the seedling stand (3) within the stretched range in the seedling feeding direction of the conveyor belt (15) in a side view while protruding from the conveyor belt (15). And install this bracket (18) on the back side of the seedling stand (3). The seedling planting device supported by fixed columns (22) arranged in. 2. A tension applying means (2) for applying a tension to the conveyor belt (15) by applying a biasing force to the idler pulley (14) in a direction away from the drive pulley (13).
The seedling planting device according to claim 1, wherein 5) is provided in a state of being located in a winding region of the conveyor belt (15) in a side view. 3. A plurality of the belt type vertical feeders (8) are arranged side by side on the left and right sides to equip the seedling stand (3), and the left and right inner sides of the plurality of belt type vertical feeders (8). The seedling planting device according to claim 1 or 2, wherein a pair of pairs is configured to apply tension by the tension applying means (25).